Weight-motor



J. M. JOHNSON.

WEIGHT MOTOR.

APPLICATION FILED APR. 14. 1917.

1,359,994. Q Patented Nov. 23, 1920.

2 SHEETS-SHEET I.

'J. M. JOHNSON.

WEIGHT MOTOR.

APPLICATION FILED APR. 14. 1911. V

m m 0 v w 6/ n 0 UNITED TAT S" PATENT wa JAY M. Jomvsomor cHIceGd ILLnvors.

WEIGHT-MOTOR.

Specification of Letters Patent. 'Pjate nted NOV, i

' Application filed hprill l, 1917. Serial No. 162,045.

This invention relates to an *improved 7 V driving mechanism particularly adapted for use on phonographs, talki11'g machines, and other similar devices wherein an even source y and application of power is desired. "This invention contemplates the use'of gravity as a source of power, and mechanisms are provided for utilizing the force of gravity acting on a weight member for-the purpose intended.

It an object therefore [of this invention to construct a weight "motor "wherein the force of gravity is utilized as an element of the source of power for the mechanism, and

' with means for automatically shifting the mechanism subject' -toytheforce of gravity to maintain its position to be acted upon by the force of gravity whereby the; force or energy effect thereof may be utilized.

It is also an object of this invention to construct a driving mechanism wherein a weighted member 1s"sub ect to grav ty to impose a force effect upon the driving mechanism.

It is furthermore an object of=thisi nvention to construct a driving mechanism utiliznism is' continuously manifested.

ing a weight member susceptible-to the force of gravity and provided with 'means power driven and operable to elevate or maintain said weight member elevated whereby the force effect thereof uponthe'driving;mecha-- 1 -Other and further importantobjects of my invention will be evident lfrom-thedisclosure in the drawings and specification.

The invention (in' a'=preferred form) is illustrated in the drawi-ngs and hereinaftermore fullyd'escribed T '{Onf-th'e drawings:

- l i-gur'e 1 is a centralvertical section with parts omitted taken' throughaa-talking.Iha-

chine equipped -with-drivi-ng:mechanisms em- 'body-ingthe principles Y o fwith o erat on show fi mynz dotted lines.

invention,- and.

i .Fig. 2 is an enlarged side elevation of the operamechanism shown in Fig. j 1,; with the tionillustrated in dottedlinesj V Fig. 3'is a top plan view of the movable gravity mechanism. 7 p l Fig. 4 is a sectional detail on line 4. 4 ofFig.1. I

Fig. 5 1s'a fragmentary front View of a mechanism embodyin invention; adapted to a machine. e

liig 6 is an" enlarged view parts in elevation,- and parts ln'sctlbli.

Fig.7 is a sectional-detail taken on' line .77'of F1g.5.'

Fig. 8 is a fragmentary bottom plan view top plate or wall of the machine.'-

As shownon the drawings: i

The reference numeral 1, indicatesthe cabinet or casing of- 'a' talking *machine or phonograph of any convnuena t pe, prog the prineiples-of my thereof with of the mechanisms suspended beneath the vided with a horizontal partition Wall '2, in r the upper portion thereof, andwitharecord carrying disk-3', rotatably journaled thereabove in a usual and well known manner.-

Said record carrying disk is supported on and driven by an axialshaft 4;"which eX- tends downwardly therefrom through the wall 2,' and is journaled in a'bracket'e, secured therebeneath. Journaled horizontally in bearings 63* is a horizontal shaft 7,10f a transmission" mechanism equipped with a centrifugal speed governing mechanism 8, and having a worm '9, which meshes with a worm gear 9 onthe shaft "This por tion of the driving mechanism is,' however,

'old and forms no-partofthe present in v vention, and hence further details thereof are not entered into. Also secured upon the shaft 7, is a sprocket wheel 10, and trained thereabout is a continuous chain 11.

A gravity member consisting of a.block..

12,"is suspended from one run or flight of i 100.

the chain 11; due to thesfact :that said chain is trained around "allarge sprocket wheel 13, and over a small sprocket wheel 14:,

which are secured upon shafts 15 and 16, re-- spectively, journaled in center bearings 'l'l, I

. mounted on: the upper isurface .of said. block 112. iA-. .wormf wheel 18; is. secured upon the shafts 1 5, and, meshing therewith a Worm shaft 19, forming the armature shaft Lofa iiifnotor 20,;mo'unte'd onpthetop surface of. said lblock memoe1 12.

'll four ited2on one slde ofthe-cabinet 1 ,.;.on .l'the -mtermr thereof; a. switch icomprising an insulating block 21, with terminals 22 and 23, thereon, which are in electrical circuit with any source of E. M. F. and with said motor 20. Pivoted upon said switch block 21, co-axial with the terminal 22, and in circuit therewith, is a long U-shaped lever 2 1, and connected centrally beyond the pivot center thereof is a tension spring 25, which is connected'to a fixed point on the switch block 21, acting to hold said lever in either one of its possible adjusted positions beyond dead center. One stop pin 26, is provided on the upper portion of the switch block 2.1, to limit the movement of said lever 2 1, in one direction, and another stop pin 27, is pro vided on the lower portion of said. switch block and in circuit with the terminal 23, to

limit themovement of said lever to its. other position, and when the lever moves into contact with the stop pin 27 it establishes a circuit between the terminals 22 and 23. A pin extension 28, is provided on one side of the ing therein one end of a vertical worm shaft 31, which is slidable upwardly therethrough :and meshes with said worm wheel 29. Se

cured to and depending from the wall 2, vare guide rods 32, and slidably .m'ountcd K thereon is a gravity block member 33.

Mounted'upon the block member "motor 34, provided witha worm 35,1. eshing with a worm wheel 36, which secured upon the worm shaft As clearly shown in Fig.6, the lower end of said worm shaft 31, extends rotatably through the block 33, and isprovided with collars 37 and .38, re-

' spectively, recessed thereinto to retain said block supported thereon.

Theoperation' is as follows: I V In the form of mechanism illustrated in Figs. 1 to 4, inclusive, the weightblock 12,

is supported upon the chain 11, from the sprocket wheel 10, and, in moving downwardlyunderthe influence of gravity, rotates said sprocket wheel 10, to drive the record carrying'disk 3, and of course, the speed of rotation of the shaft '7, on which the sprocket wheel 10, is mounted, is controlled by the governing mechanism 8. At

thistime, of course, the sprocket wheel 13,.

- around which said chain 11, is trained on I irreversible driving connection from thesprocket wheel-is secured. When the weight. block 12, has reached its lowerlimit of 55 theweight'block 12, is'stationary, and is so held by the worm shaft 19, which forms an motor 20, to the shaft 15, on: which said movement such as that shown in dotted lines in Fig. 1, the pin extension 28, thereon,

strikes the U-shaped switch lever 24:, swinging the same slightly past dead center, and the movement thereof is continued by the spring 25, which thereby swings saidlever 2 1, into contact with the pin 27, establishing a circuit to the motor 20, by closure of the circuit between the terminals 22 and 23,01 the switch block. When the motor .20, is thus caused to operate, the shaft 15, is driven thereby, and likewise its sprocket wheel 13, thereby causing the weight block 12, to beelevated on the chain 11, even though the chain 11, is still traveling around and rotating the sprocket wheel 10. This is due to the fact that the rotation of the sprocket wheel 13, takesplace at a higher speed than that of the sprocket wheel 10, the speed of which is governor controlled. When the weight block 12, has moved into its upper limiting position, the pin 28, thereon, strikes the switch lever 24, swing ing the same past dead center position and the movement is continued into the full line" positionshown in Fig. 1, so that contact with the pin 27 ,is broken, the circuit to the motor 20, is opened, and the motor then ceases operation. The operation then again continues through the cycle described providing a continuous driveto the recordfdisk 3. Of course, byopening the motor'circuit by any suitable switch- (not shown), the mechanisms are permitted. to come to rest with the weight block 12, in its lowered position.- I l In the type of mechanism illustrated in Figs. 5 to 8, inclusive, the weight member 33, is supported-upon a verticalworm shaft 31, which is journaled therethrough and which meshes with a worm wheel 29, on the governor shaft 7, of the mechanism. The gravity effect of the weight member 33, tends to rotate the worm wheel 29, due to engagement of the worm shaft 31, there-T1 with. The motor 34, is caused to operate as before described when pin 28' operates switch 24, thereby rotating the worm shaft .31, in. a direction to elevate the' samc together with the weight member 33, and mechanism supported thereon. I am aware-that various details of construction may be varied through a wide range without departing from the principles of this invention, and I therefore do not purpose limiting the patent granted otherwise than necessitated by the prior art. I claim as my invention:

1. A device .of 'theclass described comprising a sprocket wheel, a transmission mechanism driven thereby, a weight, a frame mounted on the weight, a pair of sprocket wheels. journaled in the frame adjacent each other-and in substantially the same plane, a sprocket chain engaged over the first-mentioned sprocket wheel and 1111 der one and over the other of the pair of sprocket wheels on the weight, said sprocket chain being of sutficient length to permit downward movement of the ,weight, and means whereby the sprocket wheels on the weight are prevented from rotating during the downward movement of the weight.

2. A device of the class described comprising a sprocket wheel, a transmission mechanism driven thereby, a Weight, a pair of sprocket wheels journaled on the Weight adjacent each other and in substantially the same plane, and a sprocket chain engaged over the first sprocket wheel and under one and over the other of the pair of sprocket wheels on the weight, said sprocket chain 1 gravitational power is exhausted, and means 7 associated with said mechanism whereby said sprocket Wheel is prevented from rotating during the downwardmovement of the weight.

In testimony whereof I' have hereunto subscribed my name in the subscribing witnesses.

Witnesses: s CHARLES W. HILLS, J r.,

EARL M. HARDINE.

presence of two JAY JOHNSON. 

